NEN NPR ISO/TR 10686 : 2013

Specifies methods that can be used to: - relate the cleanliness of a hydraulic system to the cleanliness of its components and the hydraulic fluid belonging to the system; - estimate the final cleanliness level of an assembled hydraulic system filled with the hydraulic fluid, upon its release from the manufacturing area; - calculate and manage cleanliness requirements of components and subassemblies that make up a system and of the fluid filling it so as to achieve a required cleanliness level (RCL) for the final system.